[libc-commits] [libc] [libc] [startup] add cmake function to merge separated crt1 objects (PR #75413)

[Schrodinger ZHU Yifan via libc-commits]

================
@@ -1,19 +1,53 @@
+# This function merges multiple objects into a single relocatable object
----------------
SchrodingerZhu wrote:

Should I add a link to the relocatable linkage post? https://maskray.me/blog/2022-11-21-relocatable-linking

https://github.com/llvm/llvm-project/pull/75413